研究目的
To enhance the isolation in a MIMO antenna array using a metamaterial decoupling structure to reduce mutual coupling between antenna elements without affecting bandwidth and radiation patterns.
研究成果
The designed metamaterial decoupling structure effectively reduces mutual coupling in the MIMO antenna array by approximately 12.5 dB at 5.3 GHz without compromising bandwidth or radiation patterns. This approach offers a promising solution for miniaturized MIMO systems with high isolation.
研究不足
The study is based on simulation results only; no physical fabrication or experimental validation is mentioned. The design is specific to a two-element array at 5.3 GHz, and scalability to larger arrays or other frequencies may require further investigation.
1：Experimental Design and Method Selection:
The experiment involves designing a metamaterial structure with three modified split-resonator rings and integrating it into a two-element MIMO antenna array to reduce surface wave propagation and mutual coupling. The design is optimized using simulation software (HFSS).
2：Sample Selection and Data Sources:
The MIMO array consists of two microstrip patch antennas etched on an FR4 PCB substrate with specific dimensions. The metamaterial array is also designed on the same substrate.
3：List of Experimental Equipment and Materials:
FR4 PCB substrate (thickness 1.6 mm), microstrip patch antennas, metamaterial cells with split-resonator rings, and simulation software (HFSS).
4：6 mm), microstrip patch antennas, metamaterial cells with split-resonator rings, and simulation software (HFSS).
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The array is modeled and optimized in HFSS. The metamaterial structure is inserted between the antenna elements, and S-parameters (return loss and transmission coefficient) and radiation patterns are simulated to evaluate isolation and performance.
5：Data Analysis Methods:
Simulation results are analyzed to compare isolation (S12), bandwidth, and radiation patterns with and without the metamaterial decoupling structure.
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